Fault management system--select two-level linkage query

Write fault management system, according to the main class-platform for fault search, need to use the select two-level linkage query

My front-end technology pure rookie, asked a high level of colleagues to take care of, so record down, lest later forget

Front-end HTML

<form id= "tab"  class= "Form-inline"  role= "form"  action= '/search/'  method= ' GET '  style= "float:right;margin-top:-48px;margin-right:0px;" >        <!--<div class= "panel-heading" >-->         <div class= "Form-group" >         <select class= "Form-control"  name= "program"  id= "Se_program" >         <option value= "Test_program" > Please select Main class </option>         {% for val  in search %}             <option value= "{{ val }}"  { % if val == query %}selected{% endif %}>{{ val }}</option >        {% endfor %}        </select>        < select class= "Form-control"  name= "PlatForm"  id= "Se_platform" >         <option value= "Test_platform" > Please select Platform </option>         </select>        </div>          <button class= "Btn btn-primary"  type= "Submit" > <i class= "Fa fa-save" ></i>search</button>         <!--</div>-->        </form><script  type= "Application/javascript" >    $ (document). Ready (function ()  {       $ (' #se_program '). Change (function  ()  {           se_program = $ (' #se_program '). Val ();           data  = {se_program: se_program};          $.ajax ( {              url: "/liandong/",               data:data,               type: ' Post ',                   success: function (Platform) {                  $ ("#se_platform"). Empty ();                   $ ("#se_platform"). Append ("<option value= ' Test_platform ' >" + "Please select platform" + "</ Option> ");   &nBsp;               $.each (Platform, function (i) {                   $ ("#se_platform"). Append ("<option " + "value=\" "+platform[i]+" \ ">" +platform[i]+ "</ Option> ")                       })                }          })       }) </script>

Django back-end view

Def search (request,page):     "" "     search view, receive the main class name from the front end, match the database to get the data, Back to front end, custom paging      "" "    check_program=request. get[' program ']    check_platform=request. get[' PlatForm ']    check_program=check_program.encode ("Utf-8")      Check_platform=check_platform.encode ("Utf-8")     if check_Program ==  ' Test_ Program ':         return httpresponseredirect ('/index/')      if check_Program !=  ' Test_program '  and check_platform== ' test_ Platform ':                 ch_ Result = faultreports.objects.filter (Program = check_program)          plat=faultreports.objects.values_list (' PlatForm ', flat=true). Filter (program =&Nbsp;check_program)         plat=set (plat)          if ch_result:             islogin=false            page=gb001.try_int ( PAGE, 1)             totalitems= FaultReports.objects.filter (Program = check_program). Count ()              pageinofobj=html. PageInfo (Page,totalitems)             pager=html. Search_program_page ('/search/', Page,pageinofobj.totalpage (), Check_program)              all_data=faultreports.objects.filter (Program = check_program). Order_by ("-id") [Pageinofobj.from ():p ageinofobj.to ()]       &nBsp;    data=faultreports.objects.values_list ("program", Flat=true)              data=set (data)              try:                 islogin=request.session[' IsLogin ']             except Exception,e:                 pass            if  islogin:                 name =request.session[' username ']                 return render_to_response (' search.html ', {' login_user ': Name, ' Pager ':p ager, ' result ' : All_data, ' Search ':d atA, ' query ': Check_program, ' plat ':p lat})              Else:                return  httpresponseredirect ('/login/')     else:         ch_result = faultreports.objects.filter (Program = check_program,platform=check_ PlatForm)         plat=faultreports.objects.values_list (' PlatForm ', flat =true). Filter (Program = check_program)         plat=set (plat)         print plat         if ch_result:            islogin=false             page=gb001.try_int (page, 1)       &nbSp;      totalitems=faultreports.objects.filter (Program = check_ Program,platform=check_platform). Count ()              pageinofobj=html. PageInfo (Page,totalitems)             pager=html. Search_program_page ('/search/', Page,pageinofobj.totalpage (), Check_program,check_platform)              all_data=faultreports.objects.filter (Program =  check_program,platform=check_platform). Order_by ("-id") [Pageinofobj.from ():p ageinofobj.to ()]             data=faultreports.objects.values_list ("program", Flat=true)             data=set (data)              try:                 islogin=request.session[' IsLogin ']             except Exception,e:                 pass             if islogin:                 name =request.session[' username ']                 return render_to_response (' search.html ', {' Login_user '): Name, ' Pager ':p ager, ' result ': all_data, ' Search ':d ata, ' query ': Check_program, ' query_platform ': check_platform, ' plat ':p lat})             else:                 return httpresponseredirect ('/ Login/')

Fault management system--select two-level linkage query